addendum

src/ffx/diagnostics/warn_corrupt_mpeg_audio.py

@@ -9,6 +9,7 @@ class WarnCorruptMpegAudioRemedy(FfmpegRemedy):
     identifier = "warn-corrupt-mpeg-audio"
     PATTERNS = (
         re.compile(r"\[mp3float @ .*\] invalid block type", re.IGNORECASE),
+        re.compile(r"\[mp3float @ .*\] invalid new backstep -?\d+", re.IGNORECASE),
         re.compile(r"\[mp3float @ .*\] Header missing"),
         re.compile(r"\[mp3float @ .*\] overread, skip ", re.IGNORECASE),
         re.compile(r"Error while decoding MPEG audio frame\."),

tests/unit/test_ffmpeg_diagnostics.py

@@ -126,6 +126,9 @@ class FfmpegDiagnosticsTests(unittest.TestCase):
             ["ffmpeg", "-y", "-i", "input.avi", "output.mkv"],
         )
 
+        self.assertFalse(
+            monitor.handle_stderr_line("[mp3float @ 0x1] invalid new backstep -1")
+        )
         self.assertFalse(monitor.handle_stderr_line("[mp3float @ 0x1] invalid block type"))
         self.assertFalse(
             monitor.handle_stderr_line(